Check out this teacher site if you are teaching Hinduism and Buddhism. The site's author, a teacher at the Emma Willard school, has some interesting lesson ideas and excellent short readings, especially for Buddhism, that might be great for 9th grade world history students. My thanks to Rob Kerr who sent me the link to this site.
For other resources on Hinduism and Buddhism, check out my religion blog. Just use the search function to find entries on both religions.